Why can I not succeed in adding an attachment file to my tax return?
When you add or correct something in MyTax, it is usually not required of you to add any enclosures or attachments. It is enough if you just save the receipts, vouchers and other documentation, and enter the amount – how many euros to deduct, for example – in the appropriate field. The Tax Administration will ask for more information if necessary. For example, you may have to give more information later about a household expense or about your expenses for the production of income.
Some of the fields contain a feature that allows you to add attachments (e.g. some commuting expenses and travel expenses in special sectors of work, or the sale of corporate shares and other securities). For these fields, you will see the words Attachments and “Add file”.